The main causes and solutions of PVC paste resin foaming:
PVC paste resin is a commonly used adhesive, because it can be formed after thermoplasticizing, processing does not need very complex equipment, convenient configuration, good stability, easy to use, with mechanical strength, easy to color and other excellent characteristics, is widely used in artificial leather, soft trademarks, wallpaper, industrial coatings and foamed plastics and other industries.
PVC paste resin is a commonly used adhesive. Due to its ability to be formed before being thermoplasticized, it does not require complex equipment for processing, is easy to configure, stable, user-friendly, and easy to operate. It has good paste performance and excellent dispersion, as well as good mechanical strength and ease of coloring. It is widely used in industries such as artificial leather, soft labels, wallpaper, industrial coatings, and foamed plastics. However, the foam problem that arises during the production of this PVC paste resin can indeed cause headaches for manufacturers. In fact, there is a simple method for foam treatment using PVC paste resin defoamer. Below, we discuss some of the issues that may be encountered during the production of PVC paste resin:
1. When configuring dispersant: there is a stirring operation, which leads to the large star foam of the solution, which will not only lead to spillover and loss of dispersant, but also affect the height of the observation level.
2. The dispersant in the polymerization reaction: the dispersant in the involvement reaction, because of its surface tension with the mixing will also produce foam "wet bubble", the existence of "wet bubble" will lead to VCM gas phase polymerization, usually produce adhesive is for this reason.
3. The discharge process of slurry: the slurry after the reaction is generally discharged into the material tank, and the unreacted gas should be discharged. In this discharge process, the discharge meeting is accompanied by a lot of bubbles. The foam following the unreacted gas will lead to material waste, pipeline blockage and other problems.
PVC Paste resin in the production process of these headaches are more difficult to deal with the problems, will be solved after the use of PVC paste resin defoaming agent.
